Westburg (hamstring) is with Triple-A Norfolk and will work out for a couple days before getting into rehab games later this week, Roch Kubatko of MASNSports.com reports.
There was a report last week that Westburg may not need a rehab assignment, but we can now rule out a return when first eligible Wednesday. If he needs only a couple rehab games, he could still be activated by the end of the weekend, but those in weekly leagues should try to get him out of lineups.